DALLAS - March 3, 1999 - A recently developed electro-analgesia technique may
offer new hope to patients who suffer from chronic, debilitating back pain,
according to researchers at
UT Southwestern Medical Center at Dallas.

In the March 3 issue of the Journal of the American Medical Association (JAMA),
UT Southwestern scientists detail their findings that Percutaneous Electrical
Nerve Stimulation (PENS), a technique that involves insertion of
acupuncture-like needles into the soft tissue and muscle surrounding bones,
produced significant acute pain relief. During the procedure, a small electrical
current is passed through the needles.

PENS reduces the need for analgesic medications and may decrease the need for
other more invasive procedures, such as surgery and spinal-cord stimulation, by
becoming part of an interdisciplinary approach to treating chronic back pain,
said Dr. Paul White, professor of anesthesiology and pain management and member of
the Eugene McDermott Center for Pain Management.

The randomized, sham-controlled study, which involved 60 healthy patients with severe lower back
pain, compared the effectiveness of PENS to that of transcutaneous electrical
nerve stimulation and flexion-extension exercise therapies, two other commonly
used pain-relief methods. According to pre- and post-treatment assessments that
evaluated patients for discomfort, physical activity and quality of sleep, PENS
was significantly more effective in decreasing pain scores after each treatment
than the other methods. Following a series of 12 PENS treatments, patients also
reported increased physical activity and improved sleep.

The primary goal was to improve the quality of life for these patients, many of
whom have suffered from debilitating pain for years, said Dr. Robert
Gatchel, professor psychiatry at UT Southwestern. The
researchers said that, while PENS is designed to complement, not eliminate,
other pain-management techniques, they found patients '"/>

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